Guiding appliance for drilling-machines.



.'No. 838,339. PATEN'IBD DECVll, 1906.

E. M. KINSELLA.

GUIDING APPLIANCE POB. DRILLING MACHINES.

APPLICATION FILED AUG. 24. 1905.

UNTTE EDWARD MAURICE KlNSELLA, OF BISBEE, ARZON TERRYFORY.

GUIDING APPLIANCE FOR DRILLlNG-.NlACHINl-ES.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application tiled August 24, 1905. Serial No. 275.605.

To (M wlw/1L 212? 'Hm/y colic/cru:

Beit known that I, EDWARD MAURICE K1N- sELLA, a citizen of the United States, and a resident of Bisbee, in the county of Cochise and Territory of Arizona, have invented a new and .lmprovcd Guiding A pliance for j Drilling-Machines, of which the vollowing is a full, clear, and exact description.

The invention relates to hand and power drilling-machines and its obj ect is to provide a new and improved guiding appliance for guiding thc drill-bit of the machine in the drill-hole to allow easy working of the drillbit in seamy or iitchety ground and to permit ready escape the sand, dirt, or other boringsfrom the drill-h ole.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claim.

A. prac tical embodiment of the invcnti on is represented in the accompanying drawings7 forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a perspective viewvof the iniproveinent as applied to a power drilling-machine. Fig. 2 is an enlarged side eleva-tion of the improvement in position on the drill-bit` Fig. 3 is a like view of the same in position in the drill-hole, and Fig, 4 is an enlarged'sectional plan view of the same on the line 4 4 of Fig. 2.

The guiding appliance is in the form of a tubular guiding-block A, removably and adjustably secured on the shank B of the drillbit B of a hand or power drilling-machine C,

f by the use of one or more countcrsunk setscrews AD or other fastening devices disposed in any suitable relation to said shank B. The *guiding-block A has its ends A rounded oil` fo allow easy up-and-down movement of the block A in the drill-hole E on reciprocating the drill-bit B in the usual manner.

The peripheral face of the block A is provided with groovcs F, extending from one end of the block to the other and preferably in a slightly curved or spiral form, as plainly shown in l ig. 2, the said grooves permitting ready passage or escape of the sand, dirt, or other borings in the drill-hole and without requiring the removal of the drill-bit from the drill-hole. The spiral arrangement of the grooves in thcblock also prevents the formation of llutes or ridges in the dri ll-hole, which flutes or ridges would interfere with the free turning of the said block, and thereby of the drill; but by means of the spiral grooves all liability of the block sticking in the drill-hole is avoided.

When the device is in use, the guidingblock A readily guides the drill in the drill- 1 hole, and thus prevents thc drill from sticking,

especially when boring `in scamy or fitchety ground, `it being understood that the diamctcr of the guiding-block A is somewhat less than the diameter of the drill-hole E, lt will further be seen that on loosening the setscrew D the guiding-block A may be readily moved up or down on the shank B of the drill-bit, so as to bring the guiding-block in proper position for the purpose above mentioned.

Having thus described my invention, I claim as new and desire to secure by Letters Patcnt- A guiding appliance for drilling-machines, comprising an elongated block having a central opening and rounded ends and provided on its periphery with a plurality of spiral grooves extending from end to end of the block, and with means .for rigidly and adjustably securing it to a drill-rod.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD MAURICE KlNSEliliA.

iitnessesz LELAND S. GAMBLE, A. C. DOWNS. 

